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2023 BMW M340I problems

The most common problem on the 2023 BMW M340I is engine and cooling. It has fewer complaints than a typical M340I model year.

Typical yearClose to a typical year
Owner complaints
1
Recalls
1
Service bulletins
46
Worst area
Engine

The worst 2023 BMW M340I problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

  • Engine
    1

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Engine
    1

Recalls 1

Electrical system: body control module: softwareReported February 23, 2023 · 120 vehicles affected
What is wrong
BMW of North America, LLC (BMW) is recalling certain 2023 330i, 330i xDrive, M340i, M340i xDrive, M3, 330e, 330e xDrive, 430i Convertible, 430i xDrive, M440i, 2022-2023 430i, 430i xDrive, M440i xDrive, i4 eDrive40, and i4 M50 vehicles. During a service visit, a replacement electronic control unit (ECU) may have been installed with incorrect programming, which can cause the automatic door locking (ADL) function to not lock the doors as intended.
Risk
Doors that do not lock as intended while the vehicle is in motion may open during a crash, increasing the risk of injury.
Remedy
Dealers will update the ECU software, free of charge. Owner notification letters were mailed April 10, 2023. Owners may contact BMW customer service at 1‑800‑525‑7417.

Recall number 23V118000 · Recall details

See all 1 recalls for the 2023 BMW M340I

Technical service bulletins for the 2023 BMW M340I 46

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 46 bulletins for the 2023 BMW M340I

What 2023 BMW M340I owners say

Most recent owner complaints, unedited.

Filed Oct 7, 2026 · Engine · CA · crash

While parallel parking in a parking structure; my car accelerated full throttle backing up hitting the back wall ; then I tried going forward to straighten the car up, it accelerated full throttle forward hitting the front wall. I had an doctors appt. there and decided to still straighten car and I said if it goes full throttle again I would immediately put the car in neutral and turn the car off, which I did. Each time the car went full throttle I hit the brake pedal as hard as I can push. Leaving the car I tried locking the car with my key fob, it wouldn't lock or turn off the headlights, it caused the horn to keep beeping for no reason.

Compare the 2023 BMW M340I

Other model years

2020202120222023

Questions about the 2023 BMW M340I

Is the 2023 BMW M340I reliable?

Owners have filed 1 complaint about the 2023 BMW M340I, fewer than a typical M340I model year.

What is the most common problem with the 2023 BMW M340I?

Engine and cooling, with 1 complaint.

How many recalls does the 2023 BMW M340I have?

1 recall, covering electrical system.

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